Battery and electronic device

Abstract

A battery and an electronic device, the battery comprising a cell and a connecting piece. The cell comprises a metal shell. The connecting piece comprises a fixed part and an extending part. The fixed part comprises a first edge, and the extending part is connected to the first edge. The extending part is provided with a mounting hole, and the extending part comprises a first region, the first region comprising a first sub-region and a second sub-region, and the mounting hole is located between the first sub-region and the second sub-region. The first region comprises a first critical line and a second critical line, the mounting hole has a first vertex and a second vertex, the first critical line intersects or is tangent to the first vertex, and the second critical line intersects or is tangent to the second vertex. The fixed part comprises a second region, the second region comprising a third critical line and a fourth critical line, the first critical line intersects the third critical line, and the second critical line intersects the fourth critical line. The fixed part is provided with a first welding area connected with the metal shell, and along a first extension direction, the first welding area is located in a region outside the second region. The above-mentioned battery can improve the reliability.

Description

Technical Field

[0001] This application relates to the field of energy storage technology, and in particular to a battery and electronic device. Background Technology

[0002] The mounting tabs of existing batteries are usually located between the battery compartment and the steel casing of the battery cell. They are connected to the battery compartment by screws and to the steel casing by laser welding. Because the welded area of ​​the mounting tab is too close to the screw hole, stress concentration can easily occur, causing the mounting tab to tear and affecting battery reliability. Utility Model Content

[0003] In view of the above, this application provides a battery that can improve reliability.

[0004] Embodiments of this application provide a battery, which includes a battery cell and a connector. The battery cell includes a metal casing. The connector includes a fixing portion and an extension portion bent and connected to the fixing portion. The fixing portion includes a first edge extending along a first extending direction, and the extension portion is connected to the first edge. The extension portion is provided with a mounting hole and includes a first region, which includes a first sub-region and a second sub-region. The mounting hole is located between the first sub-region and the second sub-region along a second extending direction. The first region includes a first critical line and a second critical line spaced apart along the first extending direction. Both the first critical line and the second critical line are perpendicular to the first edge. The mounting hole has a first vertex and a second vertex. The distance between the first vertex and the second vertex in the first extending direction constitutes the maximum size of the mounting hole in the first extending direction. The first critical line intersects or is tangent to the first vertex, and the second critical line intersects or is tangent to the second vertex. The fixing portion includes a second region, which includes a third critical line and a fourth critical line spaced apart along the first extending direction. Both the third critical line and the fourth critical line are perpendicular to the first edge, and the first critical line intersects the third critical line, and the second critical line intersects the fourth critical line. The fixing part has a first welding area that connects to the metal shell, and along the first extension direction, the first welding area is located outside the second area. The fixing part and the extension part are integrally formed structures.

[0005] In the aforementioned battery, the fixed part and the extension part are integrally formed, which enables the connector to bear the load evenly. Along the first extension direction, the first welding area is located outside the second area, so that the first welding area and the mounting hole are misaligned along the first extension direction. This reduces the risk of the stress field generated by welding in the first welding area being superimposed with the stress field generated when the mounting hole and external components are connected by fasteners to form a high stress concentration area, thereby reducing the risk of the connector tearing and improving the reliability of the battery.

[0006] In some embodiments of this application, the width of the fixing part is greater than the width of the extension part along the first extending direction, so that the first welding area is located in an area outside the second area, and so that the fixing part can fit into the metal shell and be welded to the metal shell.

[0007] In some embodiments of this application, the metal casing includes a body and a gasket. The gasket is located between the fixing part and the body. A first welding area is welded to the gasket, and the gasket has a second welding area that is welded to the body. The first and second welding areas do not overlap along the thickness direction of the gasket. The cooperation between the gasket and the body increases the thickness of the outer surface of the metal casing, reducing the risk of damage and leakage during welding. The non-overlapping of the first and second welding areas along the thickness direction of the gasket, allowing them to be staggered, reduces the risk of the stress field generated by welding in the first welding area superimposed with the stress field generated in the second welding area, forming a high stress concentration area, and improves the structural stability and welding yield of the gasket.

[0008] In some embodiments of this application, the area of ​​the first welding area is S1, the area of ​​the second welding area is S2, and the area of ​​the gasket is S3, with 10%≤S1 / S3≤30% and 10%≤S2 / S3≤30%, which is beneficial to improving the structural stability of the gasket and the welding yield.

[0009] In some embodiments of this application, the second welding area includes a first welding sub-area and a second welding sub-area that are spaced apart. The first welding sub-area and the second welding sub-area are arranged on both sides of the first welding area along a first extending direction to disperse the stress between the second welding area and the main body, reduce the risk of the second welding area and the main body forming a high stress concentration area, and thereby reduce the risk of cracks appearing in the metal shell.

[0010] In some embodiments of this application, the fixing part includes a first side extending along a first extension direction, the first side being located on one side of the first edge. A crack-prevention groove is provided at the junction of the first side and the first edge. The crack-prevention groove penetrates the fixing part along its thickness direction, and the groove wall is arc-shaped. The crack-prevention groove provides deformation space for the extension to bend relative to the fixing part, which is beneficial for expanding the bendable angle of the extension. Furthermore, the crack-prevention groove reduces the risk of breakage of the fixing part and the extension at the bending edge by releasing stress and dispersing deformation force.

[0011] In some embodiments of this application, the minimum distance between the anti-cracking groove and the first welding area is D1, where D1 ≥ 0.5 mm, in order to reduce the risk of the connector tearing caused by the coupling of the stress field generated by welding in the first welding area and the stress field of the anti-cracking groove.

[0012] In some embodiments of this application, the fixing part is attached to the metal housing. The extension part includes a bending region and an extension region. The bending region bends in a direction away from the metal housing and connects the first edge and the extension region. A mounting hole is provided in the extension region. Along the third extension direction, the height of the first edge is lower than the height of the first side, and the third extension direction is perpendicular to the first extension direction. A clearance area is formed on one side of the first edge along the third extension direction. The bending region bends in a direction away from the metal housing through the clearance area, so that the extension region and the part of the fixing part with the first side share the space in the third extension direction. This is beneficial for making the connector structure compact and improving the space utilization rate of the connector on the metal housing.

[0013] In some embodiments of this application, the fixing part includes a second side and a third side extending along a first extending direction. The second side and the third side are located on both sides of the first edge, respectively, to increase the contact area between the fixing part and the metal shell, thereby improving the stability of the connection between the connector and the metal shell. Anti-crack grooves are provided at the junction of the second side and the first edge, and at the junction of the third side and the first edge, respectively. The anti-crack grooves penetrate the fixing part along its thickness direction, and the groove walls are arc-shaped. The anti-crack grooves provide deformation space for the extension to bend relative to the fixing part, which helps to expand the bendable angle of the extension and reduces the risk of breakage at the junction of the fixing part and the extension.

[0014] In some embodiments of this application, the fixing part is attached to the metal housing. The extension part includes a bending region and an extension region. The bending region bends in a direction away from the metal housing and connects the first edge and the extension region. A mounting hole is provided in the extension region. Along the third extension direction, the height of the first edge is lower than the height of the second side and the height of the third side. The third extension direction is perpendicular to the first extension direction. A clearance area is formed on one side of the first edge along the third extension direction. The bending region bends in a direction away from the metal housing through the clearance area, so that the extension region and the parts of the fixing part with the second and third sides share the space in the third extension direction. This is beneficial for making the connector structure compact and improving the space utilization rate of the connector on the metal housing.

[0015] In some embodiments of this application, the first edge includes a first sub-edge and a second sub-edge spaced apart along a first extending direction. The extension includes a first sub-part and a second sub-part, the first sub-part connecting to the first sub-edge and the second sub-part connecting to the second sub-edge. Each of the first and second sub-parts is provided with a mounting hole to more securely fix the connector to the external component. The fixing part includes a fourth side edge, located between the first and second sub-edges along the first extending direction. Anti-crack grooves are provided at the junction of the fourth side edge and the first sub-edge, and at the junction of the fourth side edge and the second sub-edge. The anti-crack grooves penetrate the fixing part along its thickness direction, and the groove walls are arc-shaped. The anti-crack grooves provide deformation space for the extension to bend relative to the fixing part, which helps to increase the bendable angle of the extension and reduces the risk of breakage at the junction of the fixing part and the extension.

[0016] In some embodiments of this application, the fixing part is attached to the metal shell. The first sub-part includes a first sub-bending region and a first sub-extending region. The first sub-bending region bends in a direction away from the metal shell and connects the first sub-edge and the first sub-extending region. A mounting hole is provided in the first sub-extending region. Along the third extending direction, the height of the first sub-edge is lower than the height of the fourth side, and the third extending direction is perpendicular to the first extending direction. A clearance area is formed on one side of the first sub-edge along the third extending direction. The first sub-bending region bends in a direction away from the metal shell through the clearance area, so that the first sub-bending region and the part of the fixing part with the fourth side share the space in the third extending direction. This is beneficial for making the connector structure compact and improving the space utilization rate of the connector on the metal shell.

[0017] In some embodiments of this application, the second sub-part includes a second sub-bending region and a second sub-extending region. The second sub-bending region bends in a direction away from the metal housing. The second sub-bending region connects the second sub-edge and the second sub-extending region, and a mounting hole is provided in the second sub-extending region. Along the third extending direction, the height of the second sub-edge is lower than the height of the fourth side. A clearance area is formed on one side of the second sub-edge along the third extending direction. The second sub-bending region bends in a direction away from the metal housing through the clearance area, so that the second sub-bending region and the part of the fixing part with the fourth side share the space in the third extending direction. This facilitates a compact structure for the connector 20 and improves the space utilization rate of the connector on the metal housing.

[0018] In some embodiments of this application, the battery cell includes an electrode assembly. The metal casing includes a top wall and a bottom wall disposed opposite each other along a first direction, a first wall and a second wall disposed opposite each other along a second direction, and a first side wall and a second side wall disposed opposite each other along a third direction. The top wall, bottom wall, first wall, second wall, first side wall, and second side wall enclose a receiving cavity, within which the electrode assembly is disposed. The second direction is the thickness direction of the battery cell, and the first, second, and third directions are perpendicular to each other. The battery includes a protective plate disposed on the top wall. A connector is disposed on at least one of the top wall, bottom wall, first side wall, and second side wall, such that the position of the connector is adapted to the space of the external component, which facilitates a more secure fixation of the battery to the external component.

[0019] In some embodiments of this application, the first sidewall is provided with two connectors spaced apart along a first direction, and the second sidewall is provided with two connectors spaced apart along the first direction, so that the metal casing is subjected to uniform force on both sides along a third direction, which is beneficial for the battery to be more securely fixed to the external components.

[0020] In some embodiments of this application, the fixing part is fixed at the corner of the top wall and the first side wall to increase the contact area between the fixing part and the metal shell, thereby improving the stability of the connection between the connector and the metal shell. In the event of a drop or collision of the battery, the fixing part can protect the corner of the top wall and the first side wall, reducing the risk of damage and breakage at the corner.

[0021] In some embodiments of this application, the fixing part is fixed at the corner of the top wall and the second side wall to increase the contact area between the fixing part and the metal shell, thereby improving the stability of the connection between the connector and the metal shell. In the event of a drop or collision of the battery, the fixing part can protect the corner of the top wall and the second side wall, reducing the risk of damage and breakage at the corner.

[0022] In some embodiments of this application, the fixing part is fixed at the corner of the bottom wall and the first side wall to increase the contact area between the fixing part and the metal shell, thereby improving the stability of the connection between the connector and the metal shell. In the event of a drop or collision of the battery, the fixing part can protect the corner of the bottom wall and the first side wall, reducing the risk of damage and breakage at the corner.

[0023] In some embodiments of this application, the fixing part is fixed at the corner of the bottom wall and the second side wall to increase the contact area between the fixing part and the metal shell, thereby improving the stability of the connection between the connector and the metal shell. In the event of a drop or collision of the battery, the fixing part can protect the corner of the bottom wall and the second side wall, reducing the risk of damage and breakage at the corner.

[0024] Embodiments of this application also provide an electronic device, which includes a battery compartment and any of the batteries described in the above embodiments. The battery is disposed in the battery compartment, and a connector is connected to the battery compartment. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the battery structure in one embodiment of this application.

[0026] Figure 2 This is a schematic diagram of the structure of the battery connector in one embodiment of this application.

[0027] Figure 3 This is a schematic diagram of the structure of the second welding area of ​​the battery pad in one embodiment of this application.

[0028] Figure 4 This is a schematic diagram of the layout of the two connectors of the battery in one embodiment of this application.

[0029] Figure 5 This is a schematic diagram of the layout of the three connectors of the battery in one embodiment of this application.

[0030] Figure 6 This is a schematic diagram of the layout of the four connectors of the battery in one embodiment of this application.

[0031] Figure 7 This is a schematic diagram of the battery connector layout at a corner in one embodiment of this application.

[0032] Figure 8 This is a schematic diagram of the battery connector in another embodiment of this application.

[0033] Figure 9 This is a schematic diagram of the battery structure in another embodiment of this application.

[0034] Figure 10 This is a schematic diagram of the battery connector in another embodiment of this application.

[0035] Figure 11 This is a schematic diagram of the battery structure in another embodiment of this application.

[0036] Figure 12 This is a schematic diagram of the battery connector in another embodiment of this application.

[0037] Figure 13 This is a schematic diagram of the structure of an electronic device in one embodiment of this application.

[0038] Explanation of main component symbols Batteries 100A, 100B, 100C, 100D, 100E, 100F Electronic devices 200 Battery Cell 10 Metal casing 11 Top Wall 111 Recess 1111 Bottom wall 112 First Wall 113 Second Wall 114 First side wall 115 Second side wall 116 Connector 20 Fixing part 21 First Edge 211 First Sub-edge 211A Second sub-edge 211B Second area 212 Third critical line 2121 Fourth critical line 2122 First Welding Zone 213 First side 214 Crack-resistant groove 215 Second side 216 Third side 217 Fourth side 218 Bottom edge 219 First Sub-fixing Part 21A Second Sub-fixing Part 21B Extension 22 Mounting hole 22A Area 1, 221 First sub-region 221A Second subregion 221B First critical line 2211 Second critical line 2212 Bending area 222 Extended Area 223 First Subsection 22B First sub-bending area 22B1 First Sub-Extension Area 22B2 Second Subsection 22C Second sub-bending area 22C1 Second sub-extension region 22C2 Gasket 30 Second welding zone 31 First welding sub-area 31A Second welding sub-area 31B Protection board 40 Flexible circuit board 41 Battery compartment 90 First extension direction M Second extension direction N Third extension direction O First direction Z Second direction X Third direction Y The following detailed description, in conjunction with the accompanying drawings, will further illustrate this application. Detailed Implementation

[0039] The technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0040] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or may also have a component that is centrally located. When a component is considered to be "set" on another component, it can be directly set on the other component or may also have a component that is centrally located.

[0041] When a value is considered "equal" to another value, it means that the two values ​​are equal within a set deviation range of 5%. In other words, when at least one of the two values ​​fluctuates within the set deviation range, they are considered to be approximately equal even if their values ​​are not equal.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items. The term "overlap" as used herein refers to the overlapping of the projected portions of two components or the coincidence of the projected portions of two components.

[0043] Embodiments of this application provide a battery, which includes a battery cell and a connector. The battery cell includes a metal casing. The connector includes a fixing portion and an extension portion bent and connected to the fixing portion. The fixing portion includes a first edge extending along a first extending direction, and the extension portion is connected to the first edge. The extension portion is provided with a mounting hole and includes a first region, which includes a first sub-region and a second sub-region. The mounting hole is located between the first sub-region and the second sub-region along a second extending direction. The first region includes a first critical line and a second critical line spaced apart along the first extending direction. Both the first critical line and the second critical line are perpendicular to the first edge. The mounting hole has a first vertex and a second vertex. The distance between the first vertex and the second vertex in the first extending direction constitutes the maximum size of the mounting hole in the first extending direction. The first critical line intersects or is tangent to the first vertex, and the second critical line intersects or is tangent to the second vertex. The fixing portion includes a second region, which includes a third critical line and a fourth critical line spaced apart along the first extending direction. Both the third critical line and the fourth critical line are perpendicular to the first edge, and the first critical line intersects the third critical line, and the second critical line intersects the fourth critical line. The fixing part has a first welding area that connects to the metal shell, and along the first extension direction, the first welding area is located outside the second area. The fixing part and the extension part are integrally formed structures.

[0044] The integral molding structure of the fixing part and the extension part enables the connector to bear the load evenly. Along the first extension direction, the first welding area is located outside the second area, so that the first welding area and the mounting hole are misaligned along the first extension direction. This reduces the risk of the connector tearing caused by the coupling of residual stress generated by welding in the first welding area and the stress field of the mounting hole, thereby improving the reliability of the battery.

[0045] The embodiments of this application will be further described below with reference to the accompanying drawings.

[0046] Example 1 Please refer to the following: Figure 1 One embodiment of this application provides a battery 100A. The battery 100A may be, but is not limited to, a secondary battery. A secondary battery is a battery that can be used again after being discharged by recharging to activate the active materials.

[0047] The battery 100A includes a cell 10 and a connector 20. The cell 10 is used to convert chemical energy into electrical energy, and the connector 20 is used to fix the cell 10 to an external component. The external component includes, but is not limited to, a battery compartment for an electronic device housing the battery 100A.

[0048] The battery cell 10 includes a metal casing 11 and an electrode assembly (not shown) disposed within the metal casing 11. The electrode assembly includes a positive electrode, a negative electrode, and a separator. The positive electrode, negative electrode, and separator can be stacked to form a stacked structure, or they can be stacked and wound together to form a wound structure.

[0049] The positive electrode includes a positive current collector and a positive active material layer disposed on the positive current collector. The negative electrode includes a negative current collector and a negative active material layer disposed on the negative current collector. Both the positive and negative current collectors can be metal layers. As an example, the positive current collector can be a metal layer including at least one of aluminum, nickel, tantalum, and titanium, such as aluminum foil. The positive active material layer includes a positive active material, which can include at least one of lithium cobalt oxide, lithium nickel cobalt manganese oxide, lithium nickel cobalt aluminum oxide, lithium iron phosphate, lithium manganese iron phosphate, or lithium manganese oxide. The negative current collector can be a metal layer including at least one of copper, nickel, tantalum, and titanium, such as copper foil. The negative active material layer includes a negative active material, which can include at least one of graphite, hard carbon, soft carbon, silicon, silicon-oxygen materials, and silicon-carbon materials.

[0050] In some embodiments, a portion of the positive current collector has a positive active material layer, while a portion of the positive current collector does not have a positive active material layer. A portion of the negative current collector has a negative active material layer, while a portion of the negative current collector does not have a negative active material layer.

[0051] In some embodiments, the outermost ring of the electrode assembly has a positive current collector layer without a positive active material layer, and the positive current collector is aluminum foil.

[0052] The metal casing 11 contains an electrolyte (not shown), which includes a lithium salt and a solvent. The lithium salt includes at least one of LiPF6, LiBF6, LiClO, LiB(CH3), LiCHSO4, LiCFSO4, LiN(SOCF), LiC(SOCF), or LiBOB. The solvent may be a carbonate compound, a carboxylic acid ester compound, an ether compound, other organic solvents, or a combination thereof.

[0053] Please see Figure 2 The connector 20 includes a fixing portion 21 and an extension 22 bent and connected to the fixing portion 21. The fixing portion 21 includes a first edge 211 extending along a first extending direction M. The extension 22 is connected to the first edge 211 and has a mounting hole 22A configured to be connected to an external component via fasteners.

[0054] The extension 22 includes a first region 221, which includes a first sub-region 221A and a second sub-region 221B. Along the second extension direction N, the mounting hole 22A is located between the first sub-region 221A and the second sub-region 221B to reduce the risk of the stress field at the edge of the mounting hole 22A superimposed with the stress field at the edge of the extension 22 to form a high stress concentration area, thereby improving the structural stability of the mounting hole 22A and improving the stability of the connection between the mounting hole 22A and the external component through fasteners.

[0055] Along the first extending direction M, the first region 221 includes a first critical line 2211 and a second critical line 2212, both of which are perpendicular to the first edge 211. Along the first extending direction M, the mounting hole 22A has a first vertex 22A1 and a second vertex 22A2. Specifically, the distance between the first vertex 22A1 and the second vertex 22A2 in the first extending direction M constitutes the maximum size of the mounting hole 22A in the first extending direction M. The first critical line 2211 intersects or is tangent to the first vertex 22A1, and the second critical line 2212 intersects or is tangent to the second vertex 22A2.

[0056] It should be noted that the mounting hole 22A can be a round hole, an elliptical hole, a square hole, or a hole of other shapes. This application will use a round hole as an example for illustration.

[0057] The fixing part 21 includes a second region 212 along the first extending direction M. The second region 212 includes a third critical line 2121 and a fourth critical line 2122. The third critical line 2121 and the fourth critical line 2122 are both perpendicular to the first edge 211. The first critical line 2211 intersects the third critical line 2121, and the second critical line 2212 intersects the fourth critical line 2122.

[0058] It should be noted that the first critical line 2211, the second critical line 2212, the third critical line 2121, and the fourth critical line 2122 can be drawn in the following way: the fixed part 21 and the extension part 22 are unfolded to the same plane, and the first critical line 2211 and the third critical line 2121 are drawn by intersecting or being tangent to the first vertex 22A1 in the direction perpendicular to the first edge 211, and the first critical line 2211 and the third critical line 2121 are drawn by intersecting or being tangent to the second vertex 22A2 in the direction perpendicular to the first edge 211.

[0059] The fixing part 21 is provided with a first welding area 213 that connects to the metal shell 11. The welding methods of the first welding area 213 and the metal shell 11 include, but are not limited to, laser welding, ultrasonic welding, and resistance welding. Along the first extending direction M, the first welding area 213 is located in a region other than the second region 212, so that the first welding area 213 and the mounting hole 22A are misaligned along the first extending direction M. This reduces the risk of the connector 20 tearing due to the coupling of the stress field generated by the welding of the first welding area 213 with the stress field generated when the mounting hole 22A and external components are connected by fasteners, thereby improving the reliability of the battery 100A.

[0060] In the aforementioned battery 100A, the mounting hole 22A is located between the first sub-region 221A and the second sub-region 221B along the first extending direction M. The first welding area 213 is located outside the second region 212, so that the first welding area 213 and the mounting hole 22A are misaligned along the first extending direction M. This reduces the risk of the stress field generated by welding the first welding area 213 being superimposed with the stress field generated when the mounting hole 22A and external components are connected by fasteners to form a high stress concentration area, thereby reducing the risk of tearing of the connector 20 and improving the reliability of the battery 100A.

[0061] In some embodiments, the fixing part 21 and the extension part 22 are integrally formed structures. The integral forming methods include, but are not limited to, die casting, stamping, injection molding, compression molding, 3D printing, etc.

[0062] Please see Figure 2 In some embodiments, along the first extending direction M, the width of the fixing part 21 is greater than the width of the extending part 22, so that the first welding area 213 is located in an area outside the second area 212, and so that the fixing part 21 fits into the metal housing 11 and is welded to the metal housing 11.

[0063] Please see Figure 2 In some embodiments, the metal housing 11 includes a body portion 11A and a gasket 30. The body portion 11A is a metal wall, and the gasket 30 is located between the fixing portion 21 and the body portion 11A. The fixing portion 21 is attached to the gasket 30, and a first welding area 213 is welded to the gasket 30. The gasket 30 is provided with a second welding area 31, which is welded to the body portion 11A. The cooperation between the gasket 30 and the body portion 11A can increase the thickness of the outer surface of the metal housing 11, reducing the risk of the metal housing 11 breaking and leaking during welding. Specifically, in the welding process, the gasket 30 can be welded to the body portion 11A first, and then the connector 20 can be welded to the gasket 30.

[0064] Along the thickness direction of the gasket 30, the first welding area 213 and the second welding area 31 do not overlap, so that the first welding area 213 and the second welding area 31 are staggered, reducing the risk of the stress field generated by the welding of the first welding area 213 and the stress field generated by the second welding area 31 superimposing to form a high stress concentration area, thereby improving the structural stability and welding yield of the gasket 30.

[0065] In some embodiments, when viewed along the thickness direction of the gasket 30, the area of ​​the first welding area 213 is S1, the area of ​​the second welding area 31 is S2, and the area of ​​the gasket 30 is S3, with 10%≤S1 / S3≤30% and 10%≤S2 / S3≤30%, in order to reduce the risk of poor welding caused by S1 / S3 or S2 / S3 being too small (e.g., less than 10%), and to reduce the risk of residual stress superposition forming a high stress concentration area caused by S1 / S3 or S2 / S3 being too large (e.g., greater than 30%), which is beneficial to improving the structural stability and welding yield of the gasket 30.

[0066] Optionally, S1 / S3 can be any value within the range of 10%, 11%, 12%, 13%, 14%, 15%, 16%, 17%, 18%, 19%, 20%, 21%, 22%, 23%, 24%, 25%, 26%, 27%, 28%, 29%, 30%, and any other value within the range of 10%≤S1 / S3≤30%.

[0067] Optionally, S2 / S3 can be any value within the range of 10%, 11%, 12%, 13%, 14%, 15%, 16%, 17%, 18%, 19%, 20%, 21%, 22%, 23%, 24%, 25%, 26%, 27%, 28%, 29%, 30%, and any other value within the range of 10%≤S2 / S3≤30%.

[0068] Please see Figure 3 In some embodiments, the second welding area 31 includes a first welding sub-area 31A and a second welding sub-area 31B spaced apart. When viewed along the thickness direction of the gasket 30, the first welding sub-area 31A and the second welding sub-area 31B are arranged on both sides of the first welding area 213 along the first extending direction M, so as to disperse the stress between the second welding area 31 and the body part 11A, reduce the risk of the second welding area 31 and the body part 11A forming a high stress concentration area, and thus reduce the risk of cracks appearing in the metal shell 11.

[0069] It is understood that in some embodiments, the second welding area 31 includes three or more welding sub-areas spaced apart.

[0070] Please see Figure 2In some embodiments, the fixing part 21 includes a first side 214 extending along a first extending direction M, the first side 214 being located on one side of the first edge 211 along the first extending direction M. A crack-prevention groove 215 is provided at the junction of the first side 214 and the first edge 211. The crack-prevention groove 215 penetrates the fixing part 21 along its thickness direction, and the groove wall of the crack-prevention groove 215 is arc-shaped. The crack-prevention groove 215 provides deformation space for the extension part 22 to bend relative to the fixing part 21, which is beneficial for expanding the bendable angle of the extension part 22. Furthermore, the crack-prevention groove 215 reduces the risk of breakage of the fixing part 21 and the extension part 22 at the bending edge by releasing stress and dispersing deformation force.

[0071] In some embodiments, the minimum distance between the anti-cracking groove 215 and the first welding area 213 is D1, where D1 ≥ 0.5 mm, in order to reduce the risk of the connector 20 tearing due to the coupling of the stress field generated by welding in the first welding area 213 with the stress field of the anti-cracking groove 215.

[0072] In some embodiments, D1 is one of 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1mm, 2mm, or any other value within the range of D1≥0.5mm.

[0073] Please refer to the following: Figure 1 and Figure 4 In some embodiments, the metal housing 11 includes a top wall 111 and a bottom wall 112 disposed opposite each other along a first direction Z, a first wall 113 and a second wall 114 disposed opposite each other along a second direction X, and a first side wall 115 and a second side wall 116 disposed opposite each other along a third direction Y. The top wall 111, bottom wall 112, first wall 113, second wall 114, first side wall 115 and second side wall 116 enclose a receiving cavity, and the electrode assembly is disposed within the receiving cavity. The second direction X is the thickness direction of the battery cell 10, and the first direction Z, the second direction X and the third direction Y are perpendicular to each other.

[0074] Battery 100A includes a protection plate 40, which is disposed on the top wall 111 and electrically connected to the battery cell 10. The protection plate 40 can provide, but is not limited to, protection against overcharge, over-discharge, overcurrent, short circuit, and anti-counterfeiting functions for the battery cell 10. Connector 20 is disposed on at least one of the top wall 111, bottom wall 112, first side wall 115, and second side wall 116, so that the position of connector 20 is adapted to the space of the external component, which helps to fix battery 100A more securely to the external component.

[0075] In some embodiments, the top wall 111 is provided with a recess 1111, and at least a portion of the protective plate 40 is disposed in the recess 1111 to improve the space utilization of the protective plate 40 on the top wall 111.

[0076] Please refer to the following: Figure 1 and Figure 4 In some embodiments, there are two connectors 20, with one connector 20 on the first sidewall 115 and one connector 20 on the second sidewall 116, so that the metal casing 11 is subjected to uniform force on both sides along the third direction Y, which is beneficial for the battery 100A to be more firmly fixed to the external components.

[0077] In some embodiments, the protection plate 40 includes a flexible circuit board 41 that extends out of the second sidewall 116 along the third direction Y. The flexible circuit board 41 and the connector 20 share the space in the third direction Y to improve the space utilization of the battery 100A.

[0078] Please see Figure 5 In some embodiments, the number of connectors 20 is three: two connectors 20 are provided on the first sidewall 115 at intervals along the first direction Z, and one connector 20 is provided on the second sidewall 116. The multiple connectors 20 arranged in a triangular pattern facilitate a more secure fixation of the battery 100A to the external component.

[0079] Furthermore, the two connectors 20 located on the first sidewall 115 bear less stress than the single connector 20 located on the first sidewall 115, and the thickness of the connector 20 located on the second sidewall 116 is greater than the thickness of the connector 20 located on the first sidewall 115, so that the connectors 20 can adapt to different stresses, which is beneficial for the battery 100A to be more securely fixed to the external components.

[0080] Optionally, the thickness of the connector 20 located on the second side wall 116 is 0.2±0.02mm, and the thickness of the connector 20 located on the first side wall 115 is 0.15±0.02mm.

[0081] Please see Figure 6 In some embodiments, the number of connectors 20 is four. The first sidewall 115 is provided with two connectors 20 spaced apart along the first direction Z, and the second sidewall 116 is provided with two connectors 20 spaced apart along the first direction Z, so that the metal shell 11 is subjected to uniform force on both sides along the third direction Y, which is beneficial to the battery 100A being more firmly fixed to the external components.

[0082] Please see Figure 7In some embodiments, the fixing part 21 is fixed to the top wall 111, the first side wall 115, and the corner of the top wall 111 and the first side wall 115, so as to increase the contact area between the fixing part 21 and the metal shell 11, thereby improving the stability of the connection between the connector 20 and the metal shell 11. In the event of a drop or collision of the battery 100A, the fixing part 21 can protect the corner of the top wall 111 and the first side wall 115, reducing the risk of damage and breakage at the corner. Specifically, the fixing part 21 includes a first sub-fixing part 21A and a second sub-fixing part 21B bent and connected to the first sub-fixing part 21A. The first sub-fixing part 21A is attached to the top wall 111, and the second sub-fixing part 21B is attached to the first side wall 115. The bent portion of the first sub-fixing part 21A and the second sub-fixing part 21B is attached to the corner of the top wall 111 and the first side wall 115.

[0083] In some embodiments, the fixing part 21 is fixed to the top wall 111, the second side wall 116, and the corner of the top wall 111 and the second side wall 116, so as to increase the contact area between the fixing part 21 and the metal shell 11, thereby improving the stability of the connection between the connector 20 and the metal shell 11. In the event of a drop or collision of the battery 100A, the fixing part 21 can protect the corner of the top wall 111 and the second side wall 116, reducing the risk of damage and breakage at the corner.

[0084] In some embodiments, the fixing part 21 is fixed to the bottom wall 112, the first side wall 115, and the corner of the bottom wall 112 and the first side wall 115, so as to increase the contact area between the fixing part 21 and the metal shell 11, thereby improving the stability of the connection between the connector 20 and the metal shell 11. In the event of a drop or collision of the battery 100A, the fixing part 21 can protect the corner of the bottom wall 112 and the first side wall 115, reducing the risk of damage and breakage at the corner.

[0085] In some embodiments, the fixing part 21 is fixed to the bottom wall 112, the second side wall 116, and the corner of the bottom wall 112 and the second side wall 116, so as to increase the contact area between the fixing part 21 and the metal shell 11, thereby improving the stability of the connection between the connector 20 and the metal shell 11. In the event of a drop or collision of the battery 100A, the fixing part 21 can protect the corner of the bottom wall 112 and the second side wall 116, reducing the risk of damage and breakage at the corner.

[0086] Example 2 Please see Figure 8 An embodiment of this application also provides a battery 100B, which differs from battery 100A in that the structure of the fixing part 21 is different.

[0087] The fixing part 21 is attached to the metal housing 11. Specifically, the fixing part 21 is attached to the body part 11A or the fixing part 21 is attached to the gasket 30. The extension part 22 includes a bending region 222 and an extension region 223. The bending region 222 bends in a direction away from the metal housing 11. The bending region 222 connects the first edge 211 and the extension region 223. The mounting hole 22A is provided in the extension region 223. Along the third extension direction O, the height of the first edge 211 is lower than the height of the first side 214. The third extension direction O is perpendicular to the first extension direction M. The first edge 211 forms a clearance area on one side along the third extension direction O. The bending region 222 bends in a direction away from the metal housing 11 through the clearance area, so that the extension region 223 and the part of the fixing part 21 with the first side 214 share the space in the third extension direction O. This helps to make the connector 20 structure compact and improve the space utilization rate of the connector 20 on the metal housing 11.

[0088] In some embodiments, the fixing part 21 includes a bottom edge 219 extending along a first extending direction M, and a first side edge 214 and the bottom edge 219 are arranged along a third extending direction O. Along the third extending direction O, the distance between the first side edge 214 and the bottom edge 219 is H1, and the height difference between the extending region 223 and the first side edge 214 is h1, where h1 ≤ H1 * 10%. This further facilitates a compact structure for the connector 20 and improves the space utilization of the connector 20 on the metal housing 11.

[0089] Optionally, h1 can be any value within the range of 0, 1%H1, 2%H1, 3%H1, 4%H1, 5%H1, 6%H1, 7%H1, 8%H1, 9%H1, 10%H1, and any other value within the range of h1≤H1*10%.

[0090] Apart from the differences mentioned above, the parameters of battery 100B and battery 100A are roughly the same. Please refer to the description of battery 100A above.

[0091] Example 3 Please see Figure 9 An embodiment of this application also provides a battery 100C, which differs from battery 100A in that the structure of the fixing part 21 is different.

[0092] The fixing part 21 includes a second side 216 and a third side 217 extending along the first extending direction M. The second side 216 and the third side 217 are located on both sides of the first edge 211, so as to increase the contact area between the fixing part 21 and the metal housing 11, thereby improving the stability of the connection between the connector 20 and the metal housing 11.

[0093] Anti-crack grooves 215 are provided at the junction of the second side 216 and the first edge 211, and at the junction of the third side 217 and the first edge 211, respectively. The anti-crack grooves 215 extend through the fixing part 21 along its thickness direction, and the groove walls are arc-shaped. The anti-crack grooves 215 provide deformation space for the extension 22 to bend relative to the fixing part 21, which helps to increase the bendable angle of the extension 22 and reduces the risk of breakage at the junction of the fixing part 21 and the extension 22.

[0094] Apart from the differences mentioned above, the parameters of battery 100C and battery 100A are roughly the same. Please refer to the description of battery 100A above.

[0095] Example 4 Please see Figure 10 An embodiment of this application also provides a battery 100D, which differs from battery 100C in that the structure of the fixing part 21 is different.

[0096] The fixing part 21 is attached to the metal housing 11. Specifically, the fixing part 21 is attached to the body part 11A or the fixing part 21 is attached to the gasket 30. The extension part 22 includes a bending region 222 and an extension region 223. The bending region 222 bends in a direction away from the metal housing 11. The bending region 222 connects the first edge 211 and the extension region 223. The mounting hole 22A is provided in the extension region 223. Along the third extension direction O, the height of the first edge 211 is lower than the height of the second side 216, and the height of the first edge 211 is lower than the height of the third side 217. The third extension direction O is perpendicular to the first extension direction M. The first edge 211 forms a clearance area on one side along the third extension direction O. The bending area 222 bends away from the metal shell 11 through the clearance area, so that the extension area 223 and the part of the fixing part 21 with the second side 216 and the third side 217 share the space in the third extension direction O. This is beneficial to make the connector 20 structure compact and improve the space utilization rate of the connector 20 on the metal shell 11.

[0097] In some embodiments, the fixing part 21 includes a bottom edge 219 extending along a first extending direction M, a second side edge 216 and the bottom edge 219 arranged along a third extending direction O, and a third side edge 217 and the bottom edge 219 arranged along a third extending direction O.

[0098] Along the third extension direction O, the distance between the second side 216 and the bottom side 219 is H2, and the height difference between the extension area 223 and the second side 216 is h2, h2≤H2*10%, which further helps to make the connector 20 structurally compact and improve the space utilization of the connector 20 on the metal shell 11.

[0099] Optionally, h2 can be any value within the range of 0, 1%H2, 2%H2, 3%H2, 4%H2, 5%H2, 6%H2, 7%H2, 8%H2, 9%H2, 10%H2, and any other value within the range of h2≤H2*10%.

[0100] In some embodiments, along the third extending direction O, the distance between the third side 217 and the bottom side 219 is H3, and the height difference between the extending region 223 and the third side 217 is h3, where h3 ≤ H3 * 10%, which further helps to make the connector 20 structurally compact and improve the space utilization of the connector 20 on the metal housing 11.

[0101] Optionally, h3 can be any value within the range of 0, 1%H3, 2%H3, 3%H3, 4%H3, 5%H3, 6%H3, 7%H3, 8%H3, 9%H3, 10%H3, and any other value within the range of h3≤H3*10%.

[0102] Apart from the differences mentioned above, the parameters of battery 100D and battery 100C are roughly the same. Please refer to the description of battery 100C above.

[0103] Example 5 Please see Figure 11 An embodiment of this application also provides a battery 100E, which differs from battery 100A in that the structure of the fixing part 21 is different.

[0104] The first edge 211 includes a first sub-edge 211A and a second sub-edge 211B spaced apart along a first extension direction M. The extension 22 includes a first sub-part 22B and a second sub-part 22C. The first sub-part 22B is connected to the first sub-edge 211A, and the second sub-part 22C is connected to the second sub-edge 211B. The first sub-part 22B and the second sub-part 22C are each provided with a mounting hole 22A to make the connector 20 more securely fixed to the external component.

[0105] The fixing part 21 includes a fourth side 218, which is located between the first sub-edge 211A and the second sub-edge 211B along the first extending direction M. Anti-crack grooves 215 are provided at the junction of the fourth side 218 and the first sub-edge 211A, and at the junction of the fourth side 218 and the second sub-edge 211B, respectively. The anti-crack grooves 215 penetrate the fixing part 21 along its thickness direction, and the groove walls of the anti-crack grooves 215 are arc-shaped. The anti-crack grooves 215 provide deformation space for the extension part 22 to bend relative to the fixing part 21, which helps to increase the bendable angle of the extension part 22 and reduces the risk of breakage at the junction of the fixing part 21 and the extension part 22.

[0106] Apart from the differences mentioned above, the parameters of battery 100E and battery 100A are roughly the same. Please refer to the description of battery 100A above.

[0107] Example 6 Please see Figure 12 An embodiment of this application also provides a battery 100F, which differs from battery 100E in that the structure of the fixing part 21 is different.

[0108] The fixing part 21 is attached to the metal housing 11 or the fixing part 21 is attached to the gasket 30.

[0109] The first sub-part 22B includes a first sub-bending region 22B1 and a first sub-extending region 22B2. The first sub-bending region 22B1 bends in a direction away from the metal housing 11. The first sub-bending region 22B1 connects the first sub-edge 211A and the first sub-extending region 22B2. A mounting hole 22A is provided in the first sub-extending region 22B2. Along the third extending direction O, the height of the first sub-edge 211A is lower than the height of the fourth side 218. The third extending direction O is perpendicular to the first extending direction M. A clearance area is formed on one side of the first sub-edge 211A along the third extending direction O. The first sub-bending region 22B1 bends in a direction away from the metal housing 11 through the clearance area, so that the first sub-bending region 22B1 and the part of the fixing part 21 with the fourth side 218 share the space in the third extending direction O. This helps to make the connector 20 structure compact and improves the space utilization rate of the connector 20 on the metal housing 11.

[0110] In some embodiments, the fixing part 21 includes a bottom edge 219 extending along a first extending direction M, and a fourth side edge 218 arranged with the bottom edge 219 along a third extending direction O. Along the third extending direction O, the distance between the fourth side edge 218 and the bottom edge 219 is H4, and the height difference between the first sub-extending region 22B2 and the fourth side edge 218 is h4, where h4 ≤ H4 * 10%. This further facilitates a compact structure for the connector 20 and improves the space utilization of the connector 20 on the metal housing 11.

[0111] Optionally, h4 can be any value within the range of 0, 1%H4, 2%H4, 3%H4, 4%H4, 5%H4, 6%H4, 7%H4, 8%H4, 9%H4, 10%H4, and any other value within the range of h4≤H4*10%.

[0112] In some embodiments, the second sub-part 22C includes a second sub-bending region 22C1 and a second sub-extending region 22C2. The second sub-bending region 22C1 bends in a direction away from the metal housing 11. The second sub-bending region 22C1 connects the second sub-edge 211B and the second sub-extending region 22C2. A mounting hole 2A is provided in the second sub-extending region 22C2. Along the third extending direction O, the height of the second sub-edge 211B is lower than the height of the fourth side 218. A clearance area is formed on one side of the second sub-edge 211B along the third extending direction O. The second sub-bending region 22C1 bends in a direction away from the metal housing 11 through the clearance area, so that the second sub-bending region 22C1 and the portion of the fixing part 21 with the fourth side 218 share the space in the third extending direction O. This facilitates a compact structure for the connector 20 and improves the space utilization rate of the connector 20 on the metal housing 11.

[0113] In some embodiments, along the third extending direction O, the height difference between the second sub-extending region 22C2 and the fourth side 218 is h5, h5≤H4*10%, which further helps to make the connector 20 structurally compact and improve the space utilization of the connector 20 on the metal housing 11.

[0114] Optionally, h5 can be any value within the range of 0, 1%H4, 2%H4, 3%H4, 4%H4, 5%H4, 6%H4, 7%H4, 8%H4, 9%H4, 10%H4, and any other value within the range of h4≤H4*10%.

[0115] Apart from the differences mentioned above, the parameters of battery 100F and battery 100E are roughly the same. Please refer to the description of battery 100E above.

[0116] Example 7 Please see Figure 13 An embodiment of this application also provides an electronic device 200. The electronic device 200 includes a battery compartment 90 and a battery (100A, 100B, 100C, 100D, 100E, 100F) as described in any of the above embodiments. The batteries (100A, 100B, 100C, 100D, 100E, 100F) are disposed in the battery compartment 90, and a connector 20 is connected to the battery compartment 90 to fix the battery cell 10 to the battery compartment 90.

[0117] Electronic device 200 may include, but is not limited to, mobile or fixed terminals such as tablet computers (PADs), laptops, personal digital assistants (PDAs), handheld devices with wireless communication capabilities, computing devices, in-vehicle devices, wearable devices, virtual reality (VR) terminal devices, augmented reality (AR) terminal devices, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical care, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, and wireless terminals in smart homes.

[0118] In the aforementioned batteries (100A, 100B, 100C, 100D, 100E, 100F) and electronic device 200, the fixing part 21 and the extension part 22 are integrally formed, which enables the connector 20 to bear the load evenly. The mounting hole 22A is located between the first sub-region 221A and the second sub-region 221B along the first extension direction M. The first welding area 213 is located outside the second region 212, so that the first welding area 213 and the mounting hole 22A are misaligned along the first extension direction M. This reduces the risk of the stress field generated by welding the first welding area 213 superimposed with the stress field generated when the mounting hole 22A and external components are connected by fasteners to form a high stress concentration area, thereby reducing the risk of the connector 20 tearing and improving the reliability of the batteries (100A, 100B, 100C, 100D, 100E, 100F).

[0119] In addition, those skilled in the art may make other changes within the spirit of this application. Of course, all such changes made in accordance with the spirit of this application should be included within the scope disclosed in this application.

Claims

1. A battery, characterized in that, The battery includes: The battery cell includes a metal casing; A connector includes a fixing part and an extension bent and connected to the fixing part. The fixing part includes a first edge extending along a first extending direction. The extension is connected to the first edge and has a mounting hole. The extension includes a first region, which includes a first sub-region and a second sub-region. The mounting hole is located between the first sub-region and the second sub-region along a second extending direction. The first region includes a first critical line and a second critical line spaced apart along the first extending direction. The first critical line and the second critical line are both perpendicular to the first edge. The mounting hole has a first vertex and a second vertex. The distance between the first vertex and the second vertex in the first extending direction constitutes the maximum size of the mounting hole in the first extending direction. The first critical line intersects or is tangent to the first vertex, and the second critical line intersects or is tangent to the second vertex. The fixing part includes a second region, the second region including a third critical line and a fourth critical line spaced apart along the first extending direction, the third critical line and the fourth critical line are both perpendicular to the first edge, and the first critical line intersects the third critical line, and the second critical line intersects the fourth critical line; The fixing part is provided with a first welding area that is connected to the metal shell, and along the first extending direction, the first welding area is located in a region other than the second region; The fixing part and the extension part are integrally formed.

2. The battery as described in claim 1, characterized in that, Along the first extending direction, the width of the fixing part is greater than the width of the extending part.

3. The battery as described in claim 1, characterized in that, The metal housing includes a body and a gasket. The gasket is located between the fixing part and the body. A first welding area is welded to the gasket. The gasket has a second welding area, which is welded to the body. The first welding area and the second welding area do not overlap along the thickness direction of the gasket.

4. The battery as described in claim 3, characterized in that, The area of ​​the first welding area is S1, the area of ​​the second welding area is S2, and the area of ​​the gasket is S3, where 10%≤S1 / S3≤30% and 10%≤S2 / S3≤30%.

5. The battery as described in claim 3 or 4, characterized in that, The second welding area includes a first welding sub-area and a second welding sub-area that are spaced apart, and the first welding sub-area and the second welding sub-area are arranged on both sides of the first welding area along the first extending direction.

6. The battery as described in claim 1 or 3, characterized in that, The fixing part includes a first side extending along the first extending direction. The first side is located on one side of the first edge. A crack-prevention groove is provided at the junction of the first side and the first edge. The crack-prevention groove penetrates the fixing part along the thickness direction of the fixing part, and the groove wall of the crack-prevention groove is arc-shaped.

7. The battery as described in claim 6, characterized in that, The minimum distance between the crack-stopping groove and the first welding area is D1, where D1 ≥ 0.5 mm.

8. The battery as described in claim 6, characterized in that, The fixing part is attached to the metal shell; The extension includes a bending region and an extension region. The bending region bends in a direction away from the metal housing. The bending region connects the first edge and the extension region. The mounting hole is provided in the extension region. Along a third extension direction, the height of the first edge is lower than the height of the first side. The third extension direction is perpendicular to the first extension direction.

9. The battery as described in claim 1 or 3, characterized in that, The fixing part includes a second side and a third side extending along the first extending direction. The second side and the third side are respectively located on both sides of the first edge. Crack-preventing grooves are respectively provided at the junction of the second side and the first edge, and at the junction of the third side and the first edge. The crack-preventing grooves penetrate the fixing part along the thickness direction of the fixing part, and the groove walls of the crack-preventing grooves are arc-shaped.

10. The battery as claimed in claim 9, characterized in that, The fixing part is attached to the metal shell; The extension includes a bending region and an extension region. The bending region bends in a direction away from the metal housing. The bending region connects the first edge and the extension region. The mounting hole is provided in the extension region. Along a third extension direction, the height of the first edge is lower than the height of the second side, and the height of the first edge is lower than the height of the third side. The third extension direction is perpendicular to the first extension direction.

11. The battery as described in claim 1 or 3, characterized in that, The first edge includes a first sub-edge and a second sub-edge spaced apart along the first extension direction. The extension includes a first sub-part and a second sub-part. The first sub-part is connected to the first sub-edge, and the second sub-part is connected to the second sub-edge. The first sub-part and the second sub-part are each provided with the mounting hole. The fixing part includes a fourth side edge. Along the first extending direction, the fourth side edge is located between the first sub-edge and the second sub-edge. Crack-preventing grooves are respectively provided at the junction of the fourth side edge and the first sub-edge, and at the junction of the fourth side edge and the second sub-edge. The crack-preventing grooves penetrate the fixing part along the thickness direction of the fixing part, and the groove walls of the crack-preventing grooves are arc-shaped.

12. The battery as claimed in claim 11, characterized in that, The fixing part is attached to the metal shell; The first sub-part includes a first sub-bending region and a first sub-extending region. The first sub-bending region bends in a direction away from the metal housing. The first sub-bending region connects the first sub-edge and the first sub-extending region. The mounting hole is provided in the first sub-extending region. Along the third extending direction, the height of the first sub-edge is lower than the height of the fourth side. The third extending direction is perpendicular to the first extending direction. The second sub-part includes a second sub-bending region and a second sub-extending region. The second sub-bending region bends in a direction away from the metal housing. The second sub-bending region connects the second sub-edge and the second sub-extending region. The mounting hole is provided in the second sub-extending region. Along the third extending direction, the height of the second sub-edge is lower than the height of the fourth side.

13. The battery as claimed in claim 1, characterized in that, The battery cell includes an electrode assembly. The metal casing includes a top wall and a bottom wall disposed opposite to each other along a first direction, a first wall and a second wall disposed opposite to each other along a second direction, and a first side wall and a second side wall disposed opposite to each other along a third direction. The top wall, the bottom wall, the first wall, the second wall, the first side wall and the second side wall enclose a receiving cavity. The electrode assembly is disposed in the receiving cavity. The second direction is the thickness direction of the battery cell. The first direction, the second direction and the third direction are perpendicular to each other. The battery includes a protection board, which is disposed on the top wall; The connector is disposed on at least one of the top wall, the bottom wall, the first side wall, and the second side wall.

14. The battery as claimed in claim 13, characterized in that, The first sidewall is provided with two connecting members spaced apart along the first direction, and the second sidewall is provided with two connecting members spaced apart along the first direction.

15. The battery as claimed in claim 13, characterized in that, The fixing part is fixed at the corner of the top wall and the first side wall; and / or, The fixing part is fixed at the corner of the top wall and the second side wall; and / or, The fixing part is fixed at the corner of the bottom wall and the first side wall; and / or, The fixing part is fixed at the corner of the bottom wall and the second side wall.

16. An electronic device comprising a battery compartment, characterized in that, The electronic device includes a battery as described in any one of claims 1 to 15, the battery being disposed in the battery compartment, and the connector being connected to the battery compartment.

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